Furnace.



PATENTED OCT. 29. 1907.

J. 6L J. R. EY-NON.

PURNAGE.

APPLICATION FILED 11153.26. 1905,.

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PATEIWEDA 00T. 29, 1907.

J. & J. R. E"YNON.

PURNAGE. APPLIOATION FILED PEB. 2a. 1906.

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PATENTED OCT. 29. 1907.

J. L J. R.' EYNON.

4 FURNAGB. APPLICATION FILED FEB. 28. 19.06.

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f No. 869,698. PATENTED OCT. 29. 1907.

J. n J. R. EYNON.

FURNACE. APPLIUATION FILED FEB. ze, 1905.

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(avi/14 @ons JAMES EYNON AND JOI-IN R. EYNON, OF PHILADELPHIA,

PENNSYLVANIA.

FUR/NACE Specification of Letters Patent.

Patented Oct. 29, 1907.

Application tiled February 28, 1905. Serial No. 247,768.

To all whom L 'may concern:

Be it known that we, .Linus EYNON and JonN It. EYNON, citizens of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Furnace, of which the following is a specification.

Our invention consists of a novel construction of fur- Y nace in which a double bridge wall is employed, said walls having bricks or other suitable material int-erposed between them in order to form a greater heating surface for the air passing therethrough.

It also consists of other novel features of construction, all as will be hereinafter fully set forth.

Figure 1 represents a longitudinal vertical section of a furnace embodying our invention en line Fig. 2. Fig. 2 represents a plan view partly in section on line y-y Fig. l. Fig. 3 represents a transverse section on line LU- w Fig. 1. Figs. 4, 5 and G show modified forms of the invention shown in Figs. 1, 2 and 3. Fig. 4 represents a section on line a-a Fig. 5. Fig. 5 represents a longitudinal vertical section of an embodiment of our invention on line 2 2 Fig. 4. Fig. G represents a transverse section on line 1"-1 Fig. 5.

Similar numerals of reference indicate corresponding parts in the figures.

Referring to the drawings, 17 Figs. l, 2 and 3, designates the base or foundation of a furnace embodying our invention having side walls 2 and 3, a roof 4 therefor7 a front wall 5 and a stack 6.

7 'designates the grate for the chamber S.

9 and 10 designate two bridge walls which have bricks or other suitable material 11 built therein so as to form air passages 127 through which the air of the air blast passes before entering the combustion chamber 13.

14 designates the hearth which is covered with sand or other suitable material and 15 designates the throat of the furnace through which the unconsumed products of combustion pass into the stack 6.

16 designates a casing herein shown as surrounding the stack en three sides but this may evidently be otherwise arranged if so desired having a pipe 17 leading therefrom which latter preferably has two branches 18 and 19 which open into the chamber 20 from which a pipe or passage 2l extends beneath the hearth opening into the chamber 22. The air passes from the latter into passages 12 through the openings 23.

24 designates a valve having a link 25. Seemed to the latter is an arm or handle 26 pivoted at 2G and by means of which said valve is actuated. I

27 designates a nre box,.28 designates doers opening into the furnace above the hearth and 29 designates a door opening into the fire chamber.

30 designates baffle plates suitably secured in the smoke stack 6.

31 and 32 designate boilers suitably supported above the furnace by the walls 33 34 designates passages leading through the bricks ll, which it is evident may be thus apertured without departing from the spirit of our invention. The bricks of the several rows may be staggered if desired.

The operation is as follows z-The cold air coming from the casing 1G enters through pipe 17 and passes through pipes 1S and 19 into chamber 2() from which it is led through passage 21 into chamber 22 through passage 23 between the bridge walls and passing around the bricks 11 interposed between said walls into the combustion chamber and as these bricks or other suitable material are strongly heated owing to the location of the same between the bridge walls7 the air passing around them will absorb heat therefrom so that when the blast enters the furnace itl will be nearly at the point of ignition and coming in Contact with the unconsumed smoke and gas coming from the fire chamber and commingling therewith the products of combustion are practically all consumed. The amount of air admitted through the blast may be regulated as desired, thus insuring a nearly perfect combustion. It is evident that the fuel will be greatly economized and a more uniform heat produced.

In the furnaces heretofore constructed there has been a large amount of waste owing to a large percentage of the gaseous products of combustion passing off unconsumed. In our present invention the incoming air absorbs so much heat from the bridge walls and the material interposed between them that when the same commingles with the gas and smoke coming from the lire chamber it is nearly at the point of ignition which will cause a more perfect combustion, eliminate a large portion of the smoke and economize the fuel. We have also found that the percentage of waste of the product to be treated is much less than that in furnaces of the construction heretofore employed.

In the embodiment shown in Figs. 4 to G, 34X designates the base or foundation having sidewalls 35 and 3G, a roof 37 therefor7 a front wall 38 and a stack 39.

40 designates the gratefor the lire chamber 41.

42 and 43 designate two bridge walls having suitable material lll interposed between the walls, said material being of such a character as will readily absorb heat so that the air passing are und the same will readily absorb heat therefrom. While we preferably use fire brick for this purpose, we do not desire to be limited to such material or to material having a brick form as it is evident that other suitable material and of a different form from that shown herein may be employed without departing from the spirit of our invention.

ll5 designates the hearth which is covered with sand or other suitable material and 4G designates the throat opening into the stack 39.

47 designates doors opening above the hearth and 48 designates a door opening into the fire chamber 41. 49 and 50 designate pipes through which air may be led to the chamber' 5l, from which extends a passage 52 beneath the hearth and opening into the chamber 53.

54 designates a passage `eading from said chamber through the bridge wall 43 and opening into the space or passage 55.

56 designates the fire box.

57 designates a connection opening into the space 55 between the walls and into the fire box 56.

58 designates a door suitably hinged at 59.

60 designates a connection which opens into the chamber l at one end and at the other end into the fire box 56` 6l designates a door for said connection G0 suitably hinged at 62.

63 designates the combustion chamber.

64 and G5 designate two boilers suitably supported above the furnace by the frame 6G.

The operation will be as follows f- The air passes from the chamber 5l through the passage 52 into the chamber 53, from thence through passage 54 into the space or passages 55 between the bridge walls. In passing around the bricks or heating material so much heat will be absorbed therefrom that the air on entering the combastion chamber is super-heated nearly to the point oi ignition. The advantages of this are apparent ashereinbefore described.

It will be evident that various changes may be made by those skilled in the art, which will come within the scope of our invention and we do not therefore desire to be limited in every instance to the exact construction herein shown and described.

Having thus described my invention7 what I claim as new and desire to secure by Letters Patent, is

In a furnace, a hearth, a double bridge wall, bricks between said Walls arranged in a plurality of horizontal rows with vertical and horizontal passages, a chamber beneath the said bricks and communicatingwith the spaces between them, an air passage under the hearth, communicating at one end with said chamber', a chamber at the other end of said passage, a stack, a casing embracing the same, means connecting said casing with the last named chamber, and baIHe plates in said stach.

JAMES EYNON. JOHN R. EYNON.

Witnesses H. S. FAIRBANKS, C. D. MCVAY. 

